I really enjoyed this book. It's got the same tone as the John Locke "Donovan Creed" series, but this protag is much more likable. Not nearly so amoral. When he does a bad thing, you know he's doing it for what seems to be a very good reason to him. You can actually empathize.
Plus, he's very funny, IMO. A lot of dry commentary and self-aggrandizing asides that come off as self-parody more than anything else.
This is a popcorn series and it's a lot of fun. There's also quite a bit of poignancy as well to give the story some depth and the main character some complexity.
I was not a big fan of this author's Vampire for Hire #1 book, but I was very pleasantly surprised by this one. I downloaded the second one right after finishing this one and I've already completed it. They aren't novellas, but they are quick reads.
Might not be to everyone's tastes, but I thoroughly enjoyed it.